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Biology, 22.06.2019 07:00
In many humans, exposing the skin to sunlight over prolonged periods of time results in the production of more pigment by the skin cells (tanning). this change in skin color provides evidence that -
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Biology, 22.06.2019 07:00
Which best describes a gene? a. a sister chromatid b. a chromosome c. a tetrad d. a piece of a chromosome
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Biology, 22.06.2019 12:00
Why does the earth spin slowly, not faster? is it possible to prove it scientifically? can you prove it with math?
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Agroup of college students working on a project on bio-gas have found some bacteria in the bio-gas p...
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Mathematics, 04.12.2019 08:31
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Mathematics, 04.12.2019 08:31
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Mathematics, 04.12.2019 08:31